Quote Originally Posted by coffeecat View Post
You mention Ubuntu and Windows machines suggesting they are different machines. Am I correct?
Wow! I don't know when and why I made the assumption that it is the same machine dual booting Windows and Ubuntu.

I re-read the first post and they are clearly two different machines. That's a really strong point, and coffeecat has already given the best suggestion to test external factors.

If the machine is Ubuntu only, you'll have to press 'Shift' or 'Esc' key during bootup to get the grub boot menu.